Marine jack plate gauge



FIG. 1 is a perspective view of the marine jack plate gauge of my invention

FIG. 2 is a front end view thereof.

FIG. 3 is a top view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a back view thereof. 

The ornamental design for a marine jack plate guage, as shown and described. 